stoichiometry
noun
stoi·chi·om·e·try
ˌstȯi-kē-ˈä-mə-trē 
1
: a branch of chemistry that deals with the application of the laws of definite proportions and of the conservation of mass and energy to chemical activity
2
a
: the quantitative relationship between constituents in a chemical substance
b
: the quantitative relationship between two or more substances especially in processes involving physical or chemical change
Examples of stoichiometry in a Sentence
Recent Examples on the Web
Now, knowing that a human has about one milligram of cobalt in the body, the successful mad scientist can use the human recipe and stoichiometry to find out how much of each element is needed.
—
Kyle Hill, Discover Magazine, 16 Sep. 2013
The study relies on stoichiometry, which measures the elemental ratios that appear in the chemistry of cells and ecosystems.
—Natalie Elliot, Scientific American, 16 July 2021
If the regularity of chemical ratios within cells is a universal property of biological systems, here or anywhere else in the cosmos, then careful stoichiometry could be the key to eventually discovering life on an alien world.
—Natalie Elliot, Scientific American, 16 July 2021
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Kyle Hill, Discover Magazine, 16 Sep. 2013
The study relies on stoichiometry, which measures the elemental ratios that appear in the chemistry of cells and ecosystems.
—Natalie Elliot, Scientific American, 16 July 2021
If the regularity of chemical ratios within cells is a universal property of biological systems, here or anywhere else in the cosmos, then careful stoichiometry could be the key to eventually discovering life on an alien world.
—Natalie Elliot, Scientific American, 16 July 2021
Cite this Entry
“Stoichiometry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stoichiometry. Accessed 22 Jul. 2025.
Copy CitationMedical Definition
stoichiometry
noun
stoi·chi·om·e·try
ˌstȯi-kē-ˈäm-ə-trē
plural stoichiometries
1
: a branch of chemistry that deals with the application of the laws of definite proportions and of the conservation of mass and energy to chemical activity
2
a
: the quantitative relationship between constituents in a chemical substance
b
: the quantitative relationship between two or more substances especially in processes involving physical or chemical change
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